Affiliate disclosure
Last updated October 14, 2026
Undrop is free. It is partly funded by affiliate commissions, and we want to be clear about how that works.
How we earn money
Some links to marketplaces, such as AliExpress, are affiliate links. If you buy after clicking one, the marketplace pays us a commission. The price you pay is exactly the same.
Amazon Associates
As an Amazon Associate we earn from qualifying purchases.
Amazon listings link to the product's page on Amazon, where you'll find its price, delivery and reviews: Amazon only lets sites show its prices through its own tools.
Rankings are independent
Results are ordered by how closely they match your product, then by price. When two offers cost exactly the same, suppliers come before resellers. Commissions never change the order. While a search is still running, listings from sites that earn us a commission can show up first, because we check them first; once the search ends, the order is the one described here. Listings are grouped by the kind of site, not by what they earn us: suppliers first, then recommended platforms (large retailers such as Amazon and Walmart), then other sites, collapsed until you open them. We show listings that earn us nothing too, and the price summary at the top comes from a supplier when one has a price, from another site otherwise. The best offer at the top leaves out stores that a delivery check found don't deliver to your country, and stores abroad that price in their own local currency, unless a delivery check shows they deliver and no store in your currency does.
What happens when you click
Links go through a short redirect on our site that records the click (without building a profile about you) and sends you to the marketplace. Affiliate links are only ever opened when you click them.
The search API
Undrop's search API, which programs use with a key, lists only the listings whose link earns us a commission: that is what keeps it free. The site itself shows every listing. Programs that use the API must show those links as we give them and tell their users that they are affiliate links. Details are in our API terms.